CN107289044B - A kind of electromechanical brake and control method - Google Patents
A kind of electromechanical brake and control method Download PDFInfo
- Publication number
- CN107289044B CN107289044B CN201710505845.XA CN201710505845A CN107289044B CN 107289044 B CN107289044 B CN 107289044B CN 201710505845 A CN201710505845 A CN 201710505845A CN 107289044 B CN107289044 B CN 107289044B
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- braking
- piston
- reverse
- way clutch
- clamp body
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
- F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
- F16D55/225—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
- F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/38—Slack adjusters
- F16D65/40—Slack adjusters mechanical
- F16D65/52—Slack adjusters mechanical self-acting in one direction for adjusting excessive play
- F16D65/56—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut
- F16D65/567—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut for mounting on a disc brake
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
- F16H63/345—Parking lock mechanisms or brakes in the transmission using friction brakes, e.g. a band brakes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
- F16H63/3458—Parking lock mechanisms or brakes in the transmission with electric actuating means, e.g. shift by wire
- F16H63/3466—Parking lock mechanisms or brakes in the transmission with electric actuating means, e.g. shift by wire using electric motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D2066/003—Position, angle or speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/18—Electric or magnetic
- F16D2121/24—Electric or magnetic using motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/18—Mechanical mechanisms
- F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
- F16D2125/34—Mechanical mechanisms converting rotation to linear movement or vice versa acting in the direction of the axis of rotation
- F16D2125/40—Screw-and-nut
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/18—Mechanical mechanisms
- F16D2125/44—Mechanical mechanisms transmitting rotation
- F16D2125/46—Rotating members in mutual engagement
- F16D2125/48—Rotating members in mutual engagement with parallel stationary axes, e.g. spur gears
Abstract
The present invention relates to a kind of electromechanical brake and control method, including motor, transmission mechanism, one-way clutch, reverse-flighted screw, piston, friction limiting devices etc..Motor drives the outer ring of one-way clutch to rotate by transmission mechanism, one-way clutch drives reverse-flighted screw rotation, piston and braking clamp body are respectively driven by bidirectional helical mechanism to move in the opposite direction, and friction plate is compressed from brake disc two sides with identical power, realizes efficient braking effect.The configuration of the present invention is simple, reliable operation, braking efficiency is high, can automatically adjust brake clearance, and compensation is influenced as caused by friction disc wear, the design of simplified control system can be used for service brake and parking braking.
Description
Technical field
The present invention relates to brake fields, existing floating caliper type disc liquid braking device can be specifically replaced, with automatically controlled machine
The mode of tool realizes that friction plate clamps brake disc from two sides with identical pressure, while it is adjustable to may be implemented brake clearance, braking
The adjustable line traffic control mechanical brake of intensity refers in particular to a kind of electromechanical brake and control method.
Background technique
Brake-by-wire technology is a kind of novel braking technology occurred in recent years, between brake and brake pedal not
It is realized by the information control motor work of control system receiving sensor for automobile by mechanical or fluid power connection
Reliable and stable control for brake.Mainly there are electro-hydraulic formula braking system (EHB) and mechanical type brake system electric at present
(EMB) two kinds.Line control brake system is conducive to the optimization of braking performance of vehicle, can be easily other with ABS, ASR, ESP etc.
Electronic control system combines, therefore has wide development space.
For electro-hydraulic formula braking system (EHB) from traditional brake fluid system transformation, braking process is rapider,
Stablize, improves the braking safety and comfort of automobile, but due to remaining hydraulic unit, do not have complete brake-by-wire system
The all advantages of system are often viewed as the earlier product of one kind of mechanical type brake system electric (EMB).
Mechanical type brake system electric (EMB) realizes braking process by motor drive machinery mechanism, enormously simplifies system
The structure of dynamic system, makes brake more easily arrange, assemble and overhauls.But existing mechanical type brake system electric due to
Part brake often lacks the function of brake clearance automatic adjustment, makes brake in external environmental change and friction disc wear
In the case where cause brake actuator efficiency change indefinite problem, thus to brake efficiency control bring certain difficulty.Together
When, the problems such as that there are structures is more complicated for most of brake, and installation dimension is larger.
Summary of the invention
It is an object of the invention to propose a kind of electromechanical brake and control method.The present invention has structure letter
The advantages that list, reliable operation, it can be realized the automatic adjustment of brake clearance, by detecting the displacement of friction plate driving mechanism or turning
Angle can convert in conjunction with the size of current of motor and obtain braking clamping force size, to enable the corresponding letter of control system
Change.
Realize that the technical solution of the object of the invention is as follows:
It include motor equipped with a kind of electromechanical brake, transmission mechanism, one-way clutch, reverse-flighted screw, piston,
Rub limiting device, piston positioning means, braking clamp body, brake disc, friction plate；The internal piston has internal screw thread, described
Braking clamp body also have internal screw thread in the position opposite with piston, respectively with the both ends external screw thread of the reverse-flighted screw match
It closes, one end is left hand thread, and one end is right-handed thread；The friction plate has two panels, is arranged symmetrically in the brake disc two
Side, one is mounted on the piston, and one is mounted on the braking clamp body；The piston is via the friction
Limiting device is mounted on the braking clamp body, and the piston positioning means transport piston can only in axis direction back and forth
It is dynamic, it can not rotate；Inner ring of the middle section partial outer face of the reverse-flighted screw as the one-way clutch, the list
It is fixedly connected to the outer ring of clutch with the final element of the transmission mechanism；The final element of the transmission mechanism is transported
It is dynamic, drive the one-way clutch outer ring to rotate, one-way clutch combines, described when the reverse-flighted screw being driven to rotate
Piston and the braking clamp body simultaneously move round about, drive the friction plate from braking described in two side compressions
Disk generates braking effect；The input element of the motor connection transmission mechanism；The friction limiting device one
Divide and be fixedly mounted on the braking clamp body, has biggish frictional force between another part and the outer surface of piston, work as institute
When having relative displacement between the piston and the braking clamp body stated, since frictional force effect makes in the friction limiting device
Generate elastic potential energy；
When braking, the motor is moved via the transmission mechanism driving one-way clutch outer ring, unidirectionally
Clutch combines, and drives the reverse-flighted screw to rotate, drives the piston and the braking clamp body respectively to opposite
Direction movement, makes the friction plate be pressed on the brake disc two sides, the braking effect of high efficient and reliable is obtained, at this point, institute
There is relative displacement between the piston and the braking clamp body stated, generates elastic potential energy in the friction limiting device；When
When releasing braking, the motor one-way clutch outer ring counter motion described via the transmission mechanism driving, unidirectionally
Clutch separation, the elastic potential energy effect inside the described friction limiting device, makes the piston and the braking clamp body
Relative motion restores initial position, and reverse-flighted screw rotation at this time is to adapt to the piston and the braking clamp body
Relative motion；
When the friction plate have abrasion, thickness it is thinning after, when braking operation, the motor is via the driver
The structure driving one-way clutch combines, and drives the reverse-flighted screw to rotate, makes the piston and the caliper
Body relatively moves, and elastic potential energy reaches maximum in the friction limiting device, and since friction plate is thinning, brake efficiency is bad,
The motor works at this time, drives the reverse-flighted screw to continue to rotate, overcomes outer surface and the institute of the piston
The frictional force between friction limiting device stated, makes the piston and the braking clamp body continue to relatively move, compresses system
Moving plate obtains reliable efficient braking effect；When releasing braking, the elastic potential energy in the friction limiting device is acted on, and is made
The piston and the braking clamp body relative motion, the piston is connect with the friction limiting device with new at this time
It is relatively fixed to touch position, realizes the adjust automatically of brake clearance.
It further include between the internal screw thread of reverse-flighted screw and the piston, the internal screw thread of the braking clamp body
System working efficiency is improved to reduce frictional resistance using circulation spherical structure.
It further include increasing transmission system between the one-way clutch and the reverse-flighted screw.
It further include by the inner ring of the final element connection of the transmission mechanism one-way clutch, described is two-way
The outer ring of the screw rod connection one-way clutch, when braking operation, the one-way clutch is combined, when releasing braking, institute
The one-way clutch separation stated.
When the transmission link for being zero without reverse efficiency in the transmission mechanism or the transmission system, using locking machine
Structure realizes the parking braking under the motor power blackout situation, and the lockable mechanism uses electromagnetic brake or electric-controlled mechanical system
Dynamic device, can actuated element when being powered when release, power-off in fixed conveyor link, keep the friction plate and described
Brake disc between pressure size, realize parking braking function；It is arranged when in the transmission mechanism or the transmission system
When having the transmission link that reverse efficiency is zero, it can use the lockable mechanism and realize parking braking, also can use reverse efficiency
Be zero, power and movement can not back transfer, realize the parking braking under the motor power blackout situation.
A kind of electromechanical brake control method, which is characterized in that use electromechanical brake above-mentioned, control
When method processed comprises the steps of: braking operation, the motor drives the transmission mechanism work, the one-way clutch
Device combines, and the reverse-flighted screw is driven to rotate, and drives the piston and the braking clamp body mobile, makes the friction
Piece compresses the brake disc two sides, the rotation information of the electronic control unit detection reverse-flighted screw, in conjunction with the motor
Size of current calculates braking clamping force；When the friction disc wear, the electronic control unit control motor is rotated to compensate
It is influenced caused by abrasion.
Detailed description of the invention
Fig. 1 is the main view of the embodiment one of a kind of electromechanical brake of the invention and control method.
Fig. 2 is the A direction view of the embodiment one of a kind of electromechanical brake of the invention and control method.
Fig. 3 is the main view of the embodiment two of a kind of electromechanical brake of the invention and control method.
Fig. 4 is the main view of the embodiment three of a kind of electromechanical brake of the invention and control method.
Explanation: 1- brake-caliper support 2- guide pin 3- braking clamp body 4- target disc 5- reverse-flighted screw 6- is marked in attached drawing
Worm gear 7- one-way clutch 8- worm screw 9- sealing ring 10- dive key 11- piston 12- friction plate 13- brake disc 14-
Motor 15- sensor 16- cylindrical roller 17- spring 18- snap ring 19- motor shaft 20- electromagnetic brake 21- primary master
The moving gear 22- primary grade driven gear 25- electromagnetic coil 26- return bullet of grade driving gear 24- times of driven gear 23- times
Spring 27- lock pin
Specific embodiment
With reference to attached drawing 1 and attached drawing 2, one embodiment of the present of invention is described in detail.
As depicted in figs. 1 and 2, a kind of electromechanical brake and control method can be in guide pin (2) comprising one
The braking clamp body (3) of upper movement, guide pin (2) are fixed on brake-caliper support (1).There is braking in the jaw of braking clamp body (3)
Disk (13), the two sides of brake disc (13) have friction plate (12), and one one is mounted on piston (11) on braking clamp body (3),
There is internal screw thread in the position opposite with piston (11) on braking clamp body (3).Piston (11) passes through dive key (10) and sealing ring (9)
On braking clamp body (3), dive key (10) move piston (11) can only in the axial direction, not be able to rotate, sealing ring (9)
Have biggish frictional force between the contact surface of piston (11), when piston (11) displacement sealing ring (9) regime of elastic deformation
When interior, without relative motion between sealing ring (9) and the contact surface of piston (11).Friction plate (12) are installed in one end of piston (11), separately
There is internal screw thread in one end, installs with the one end fits of reverse-flighted screw (5).One end of reverse-flighted screw (5) is left hand thread, with piston
(11) screw-internal thread fit；The other end is right-handed thread, with the screw-internal thread fit on braking clamp body (3).Reverse-flighted screw (5) middle section
Inner ring of the partial outer surface as one-way clutch (7), in the outer ring and Worm and worm-wheel gearing of one-way clutch (7)
Worm gear (6) is fixedly connected, and worm screw (8) is connected with the output shaft of motor (14).
When braking operation, motor (14) drives worm screw (8) rotation, drives worm gear (6) underdrive, at this time one-way clutch
(7) it combines, drives reverse-flighted screw (5) rotation, piston (11) and braking clamp body (3) are screwed out simultaneously, are displaced outwardly, driven and correspond to
Friction plate (12) forced from two sides with identical to brake disc (13), realize the braking effect of high efficient and reliable.At this point, sealing ring
(9) flexible deformation occurs, elastic potential energy is stored, without relative motion between sealing ring (9) and the contact surface of piston (11).Release braking
When work, motor (14) drives worm screw (8) to rotate backward, and driving worm gear (6) also rotates backward, at this point, one-way clutch (7) point
From reverse-flighted screw (5) is in free state, and the elastic potential energy release of sealing ring (9) storage makes piston (11) and braking clamp body
(3) relative motion drives reverse-flighted screw (5) to reversely rotate under the elastic potential energy effect in sealing ring (9), and all elements restore
Initial position.
When friction plate (12) are worn, after thickness is thinning, when braking operation, motor (14) passes through worm screw (8), worm gear (6) band
Dynamic one-way clutch (7) combine, and driving reverse-flighted screw (5) rotation pushes piston (11) and braking clamp body (3) relative motion, close
When the elastic deformation amount of seal (9) reaches maximum, due to friction plate (12) wear, braking effect is bad, at this time motor (14) after
Continuous one-way clutch (7) driving reverse-flighted screw (5) rotation by combining, i.e. piston (11) and braking clamp body (3) continues opposite
Movement, therefore, sealing ring (9) keep maximum flexibility deflection, and piston (11) overcomes the frictional force between sealing ring (9),
It is matched with new contact surface with sealing ring (9), i.e., piston (11) is greater than sealing ring (9) relative to the displacement of braking clamp body (3)
Maximum flexibility deflection.When releasing braking, motor (14) drives worm gear mechanism reversion, and one-way clutch (7) separation is close
The elastic potential energy of seal (9) discharges, and makes piston (11) and braking clamp body (3) relative motion, drives reverse-flighted screw (5) rotation, this
When sealing ring (9) and piston (11) positioning cooperated with new contact surface, return displacement is still the maximum flexibility of sealing ring (9)
Deflection, thus maintain brake clearance with abrasion before it is identical, realize the adjust automatically of brake clearance.
It, can be after motor (14) be powered and reach parking braking effect when the reverse efficiency of worm screw (8) and worm gear (6) is zero
The parking braking under motor (14) power blackout situation is realized in power-off using the self-locking function of worm gear mechanism.
With reference to attached drawing 3, another embodiment of the invention is described.
The embodiment of attached drawing 3 and the embodiment main distinction of attached drawing 1 are as follows:
Transmission mechanism is different, is driven in attached drawing 1 using worm gear mechanism, and worm gear (6) is the final element of transmission mechanism,
One-way clutch (7) is mounted between worm gear (6) and reverse-flighted screw (5)；Two-stage gear drive is used in attached drawing 3, it is secondary driven
Gear (24) is the final element of transmission mechanism, and one-way clutch (7) is mounted on secondary driven gear (24) and reverse-flighted screw (5)
Between.
The limiting device that rubs is different, realizes friction limit function using sealing ring (9) in attached drawing 1, utilizes sealing ring (9)
Flexible deformation stores elastic potential energy；Friction limit function is realized using spring (17) and snap ring (18) in attached drawing 3, utilizes spring
(17) it generates flexible deformation and stores elastic potential energy.
Piston positioning means are different, are used as piston positioning means using dive key (10) in attached drawing 1, make piston (11) only
It can be axially moveable, can not rotate；Piston positioning means are used as using cylindrical roller (16) in attached drawing 3, make piston (11) can only
It is axially moveable, can not rotate.
The mode that parking braking function is realized is different, and in attached drawing 1, the reverse efficiency using worm gear mechanism is zero, directly
The parking braking under motor (14) power blackout situation may be implemented；In attached drawing 3, motor is discharged when being powered using electromagnetic brake (20)
Axis (19), locking motor shaft (19) realizes the parking braking under motor (14) power blackout situation when power-off.
As shown in figure 3, a kind of electromechanical brake and control method include one and can move on guide pin (2)
Braking clamp body (3), guide pin (2) is fixed on brake-caliper support (1).There are brake disc (13) in the jaw of braking clamp body (3),
The two sides of brake disc (13) have friction plate (12), and one is mounted on braking clamp body (3), and one is mounted on piston (11), caliper
There is internal screw thread in the position opposite with piston (11) on body (3).Piston (11) is by cylindrical roller (16) and snap ring (18) mounted in system
On moving caliper (3), snap ring (18) pushes the side far from brake disc (13) to by spring (17), and spring (17) is mounted on braking clamp body
(3) on.Cylindrical roller (16) move piston (11) can only in the axial direction, not be able to rotate, snap ring (18) and piston (11)
There is biggish frictional force between contact surface, when the displacement of piston (11) is in the regime of elastic deformation of spring (17), snap ring (18)
Without relative motion between the contact surface of piston (11).Friction plate (12) are installed in one end of piston (11), and the other end has internal screw thread, with
The one end fits of reverse-flighted screw (5) are installed.One end of reverse-flighted screw (5) is left hand thread, the screw-internal thread fit with piston (11)；
The other end is right-handed thread, with the screw-internal thread fit on braking clamp body (3).The outer surface conduct of reverse-flighted screw (5) middle section part
The inner ring of one-way clutch (7), the outer ring of one-way clutch (7) are fixedly connected with secondary driven gear (24), secondary driven tooth
It takes turns (24), secondary driving gear (23), primary driven gear (22) and primary drive gear (21) and constitutes two-stage gear reduction unit
Structure, primary drive gear (21) are fixedly connected with the motor shaft (19) of motor (14).
When braking operation, motor (14) drives one-way clutch (7) to combine by two-stage gear reduction, drives two-way
Screw rod (5) rotation pushes piston (11) and braking clamp body (3) to move in the opposite direction simultaneously, drives corresponding friction plate
(12) it forces from two sides with identical to brake disc (13), realizes the braking effect of high efficient and reliable.At this point, snap ring (18) and piston
(11) it moves together, compressed spring (17), flexible deformation occurs for spring (17), stores elastic potential energy, snap ring (18) and piston
(11) without relative motion between contact surface.When releasing braking operation, motor (14) drives two-stage gear reduction to rotate backward,
At this point, one-way clutch (7) separates, reverse-flighted screw (5) is in free state, and the elastic potential energy release of spring (17) storage makes
Piston (11) and braking clamp body (3) relative motion, i.e., the reversed rotation under the elastic potential energy effect in spring (17) of two-way nut (5)
Turn, all elements restore initial position.
When friction plate (12) are worn, after thickness is thinning, when braking operation, motor (14) passes through two-stage gear reduction band
Dynamic one-way clutch (7) combine, and driving reverse-flighted screw (5) rotation pushes piston (11) and braking clamp body (3) relative motion, bullet
The elastic deformation amount of spring (17) reaches maximum, and snap ring (18) is close to when on the step surface of left side, since friction plate (12) are worn, system
Move ineffective, motor (14) continues through one-way clutch (7) driving reverse-flighted screw (5) rotation of combination, i.e. piston at this time
(11) and braking clamp body (3) continues relative motion, and therefore, spring (17) keeps maximum flexibility deflection, and piston (11) overcomes
With the frictional force between snap ring (18), matched with new contact surface with snap ring (18).When releasing braking, motor (14) drives two
Grade gear reduction reversion, one-way clutch (7) separation, the elastic potential energy release of spring (17) make piston (11) and braking
Caliper (3) relative motion drives reverse-flighted screw (5) rotation, and snap ring (18) and piston (11) are fixed with new contact surface cooperation at this time
Position, return displacement is still the maximum flexibility deflection of spring (17), therefore it is identical as before abrasion to maintain brake clearance, reality
The adjust automatically of brake clearance is showed.
When needing parking braking, so that motor (14) driving friction plate (12) is compressed brake disc (13), reach parking braking
It is required that then electromagnetic brake (20) powers off, locking motor shaft (19) keeps brake efficiency constant, motor can be realized at this time
(14) parking braking function under power blackout situation.When electromagnetic brake (20) is powered, discharge motor shaft (19), at this time braking moment
Size can freely be controlled by motor (14).
In the embodiment of attached drawing 3, one-way clutch (7) can also be arranged in primary drive gear (21), or it is primary from
In moving gear (22), or in secondary driving gear (23), as content to be protected needed for claim 3.
Attached the third embodiment shown in Fig. 4 and attached second of embodiment shown in Fig. 3 are essentially identical, and difference is: attached
The parking braking function under motor (14) power blackout situation is realized using electromagnetic brake (20) in Fig. 3；Automatically controlled machine is used in attached drawing 4
Tool brake apparatus realizes the parking braking function under motor (14) power blackout situation, and specific work process is as follows:
When electromagnetic coil (25) is powered, lock pin (27) is made lock pin by electromagnetic force, compression retracteding position spring (26)
(27) it is not in contact with each other with secondary driven gear (24), braking or the no any influence of release to brake；When the parking system of needs
When dynamic, motor (14) drives friction plate (12) to compress brake disc (13), reaches parking braking requirement, and then electromagnetic coil (25) is disconnected
Electricity, lock pin (27) are inserted into the tooth of secondary driven gear (24) under the elastic force effect of return spring (26), keep parking system
Dynamic effect, can be realized the parking braking function under motor (14) power blackout situation.
The structure of attached the third embodiment other parts shown in Fig. 4 and the course of work all with the embodiment phase in attached drawing 3
Together, it is not further described.
With reference to attached drawing 1 and attached drawing 2, the embodiment of electromechanical brake control method a kind of in the present invention is retouched
It states.
As shown in Figure 1, a kind of electromechanical brake control method includes electromechanical brake of the invention, target
Disk (4), sensor (15), brake-caliper support (1), electronic control unit (not shown).Target disc (4) is fixedly mounted on reverse-flighted screw
(5) on the outer surface of middle section part, sensor (15) is mounted on brake-caliper support (1), and installation corresponding with target disc (4) is used for
Detect the motion state of target disc (4).When braking operation, motor (14) drives reverse-flighted screw (5) rotation, and target disc (4) is with two-way spiral shell
Bar (5) rotates together, and sensor (15) receives the rotation information of target disc (4), and is transmitted to electronic control unit, and electronic control unit combines electricity
The size of current of machine (14), can be calculated the clamping force size of brake, and be adjusted to severity of braking.
Transmission mechanism can also use chain conveyer, V belt translation, planetary gear in addition to using worm gear mechanism, gear mechanism
Other kinds of drive such as transmission, friction limiting device can also be obtained in addition to using sealing ring, spring/snap ring using other structures
To realize that similar function, piston positioning means can also use spline, pin, piston in addition to using dive key, cylindrical roller
The non-circular equal various ways in outer surface, lockable mechanism can also act on lock pin dedicated on other gears or with gear one
On latch ratchet, or the modes such as ratchet and pawl arrangement are installed on motor shaft and realize latch functions.Obviously, described embodiment
Only a part of the embodiments of the present invention, instead of all the embodiments, based on the embodiments of the present invention, in the art
Those of ordinary skill's other all embodiments obtained under the premise of no progress creative work, belong to of the invention
Protection scope.
The present invention is exemplarily described above in conjunction with attached drawing, it is clear that the present invention implements not by aforesaid way
Limitation, as long as using the various improvement that the inventive concept and technical scheme of the present invention carry out, or not improved direct application
It is within the scope of the present invention in other occasions.
Claims (6)
1. a kind of electromechanical brake includes motor, transmission mechanism, one-way clutch, reverse-flighted screw, piston, friction limit
Position device, piston positioning means, braking clamp body, brake disc, friction plate；The internal piston has internal screw thread, the braking
Caliper also has internal screw thread in the position opposite with piston, matches respectively with the both ends external screw thread of the reverse-flighted screw, one end
For left hand thread, one end is right-handed thread；The friction plate has two panels, is arranged symmetrically in the brake disc two sides, and one
It is mounted on the piston, one is mounted on the braking clamp body；The piston limits dress via the friction
It sets and is mounted on the braking clamp body, the piston positioning means move back and forth piston can only in axis direction, can not
Rotation；Inner ring of the middle section partial outer face of the reverse-flighted screw as the one-way clutch, the one-way clutch
The outer ring of device is fixedly connected with the final element of the transmission mechanism；The final element of the transmission mechanism moves, and drives
The described one-way clutch outer ring rotation, one-way clutch combines, when the reverse-flighted screw being driven to rotate, the piston and
The braking clamp body moves round about simultaneously, drives the friction plate from brake disc described in two side compressions, generates
Braking effect；The input element of the motor connection transmission mechanism；Described friction limiting device a part is fixed
It is mounted on the braking clamp body, has biggish frictional force between another part and the outer surface of piston, when the work
When having relative displacement between plug and the braking clamp body, since frictional force effect makes to generate bullet in the friction limiting device
Property potential energy；
When braking, the motor is moved via the transmission mechanism driving one-way clutch outer ring, one-way clutch
Device combines, and the reverse-flighted screw is driven to rotate, and drives the piston and the braking clamp body difference in the opposite direction
Movement makes the friction plate be pressed on the brake disc two sides, the braking effect of high efficient and reliable is obtained, at this point, described
There is relative displacement between piston and the braking clamp body, generates elastic potential energy in the friction limiting device；Work as releasing
When braking, the motor one-way clutch outer ring counter motion described via the transmission mechanism driving, one-way clutch
Device separates, and the elastic potential energy effect inside the friction limiting device keeps the piston and the braking clamp body opposite
Movement restores initial position, and the reverse-flighted screw is rotated to adapt to the phase of the piston and the braking clamp body at this time
To movement；
When the friction plate have abrasion, thickness it is thinning after, when braking operation, the motor drives via the transmission mechanism
It moves the one-way clutch to combine, drives the reverse-flighted screw to rotate, make the piston and the braking clamp body phase
To movement, elastic potential energy reaches maximum in the friction limiting device, and since friction plate is thinning, brake efficiency is bad, at this time
The motor works on, and the reverse-flighted screw is driven to continue to rotate, and overcomes the outer surface of the piston and described
Frictional force between friction limiting device, makes the piston and the braking clamp body continue to relatively move, and compresses brake disc,
Obtain reliable efficient braking effect；When releasing braking, the elastic potential energy in the friction limiting device is acted on, and is made described
Piston and the braking clamp body relative motion, the piston and the friction limiting device are at this time with new contact position
It is relatively fixed, realize the adjust automatically of brake clearance.
2. a kind of electromechanical brake according to claim 1, it is characterised in that further include in the two-way spiral shell
The internal screw thread of bar and the piston, the braking clamp body internal screw thread between using circulation spherical structure, with reduce friction resistance
Power improves system working efficiency.
3. a kind of electromechanical brake according to claim 1, it is characterised in that further include it is described it is unidirectional from
Increase transmission system between clutch and the reverse-flighted screw.
4. a kind of electromechanical brake according to claim 1, it is characterised in that further include by the driver
The inner ring of the final element connection of the structure one-way clutch, the reverse-flighted screw connect the outer of the one-way clutch
Circle, when braking operation, the one-way clutch is combined, when releasing braking, the one-way clutch separation.
5. according to claim 1 or a kind of electromechanical brake as claimed in claim 3, it is characterised in that when the biography
When the transmission link for being zero without reverse efficiency in motivation structure or the transmission system, realize that the motor is disconnected using lockable mechanism
Parking braking in electric situation, the lockable mechanism use electromagnetic brake or electric-controlled mechanical brake apparatus, can be powered
When release, power-off when fixed conveyor link in actuated element, keep pressure between the friction plate and the brake disc
Size realizes parking braking function；When being provided with the biography that reverse efficiency is zero in the transmission mechanism or the transmission system
When rotating ring section, it can use the lockable mechanism and realize parking braking, also can use reverse efficiency is zero, power and movement nothing
Method back transfer realizes the parking braking under the motor power blackout situation.
6. a kind of electromechanical brake control method, which is characterized in that use electronic mechanical system described in claim 1
Dynamic device, when control method comprises the steps of: braking operation, the motor drives the transmission mechanism work, described
One-way clutch combines, and the reverse-flighted screw is driven to rotate, and drives the piston and the braking clamp body mobile, makes institute
The friction plate stated compresses the brake disc two sides, the rotation information of the electronic control unit detection reverse-flighted screw, in conjunction with described
Motor size of current, calculate braking clamping force；When the friction disc wear, the electronic control unit control motor rotation
Turn to be influenced caused by compensation abrasion.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710505845.XA CN107289044B (en) | 2017-06-20 | 2017-06-20 | A kind of electromechanical brake and control method |
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| CN201710505845.XA CN107289044B (en) | 2017-06-20 | 2017-06-20 | A kind of electromechanical brake and control method |
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| CN107289044A CN107289044A (en) | 2017-10-24 |
| CN107289044B true CN107289044B (en) | 2019-02-05 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108458106B (en) * | 2018-02-02 | 2023-12-19 | 江苏林海动力机械集团有限公司 | Parking system based on electric vehicle rear axle |
| CN109281968B (en) * | 2018-10-25 | 2020-02-07 | 重庆市九龙坡职业教育中心 | Brake device for stepless transmission |
| CN110146302A (en) * | 2019-04-29 | 2019-08-20 | 上海蔚来汽车有限公司 | Friction disc wear detection method, device, electronic equipment and computer storage medium |
| CN110486392B (en) * | 2019-07-27 | 2021-02-02 | 浙江师范大学 | Self-energizing wire control actuator |
| CN112413005B (en) * | 2019-08-23 | 2022-02-08 | 比亚迪股份有限公司 | Disc brake and vehicle |
| EP3805059B1 (en) | 2019-10-07 | 2022-12-28 | ZF CV Systems Global GmbH | Disc brake comprising an electromechanical actuator, particularly an electromechanical parking brake actuator |
| CN110778711B (en) * | 2019-10-31 | 2021-04-20 | 奇瑞商用车（安徽）有限公司 | EPB actuating mechanism and assembling method thereof |
| CN112024725A (en) * | 2020-08-27 | 2020-12-04 | 天津泰正机械有限公司 | Stamping device |
| CN114688185A (en) * | 2022-03-25 | 2022-07-01 | 梁为胜 | Locking mechanism of electric control mechanical brake |
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| CN101660580A (en) * | 2008-08-29 | 2010-03-03 | 日立汽车系统株式会社 | Electric disk brake |
| EP2465741A1 (en) * | 2010-12-20 | 2012-06-20 | Robert Bosch GmbH | Electric servo assisted brake system |
| CN202149166U (en) * | 2011-07-06 | 2012-02-22 | 隆中控股集团有限公司 | Automatic clearance adjusting mechanism of automobile pressure disc brake |
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| CN107289044A (en) | 2017-10-24 |
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